Try Our New BETA Version
Universal Access To All Knowledge
Home Donate | Store | Blog | FAQ | Jobs | Volunteer Positions | Contact | Bios | Forums | Projects | Terms, Privacy, & Copyright
Search: Advanced Search
Anonymous User (login or join us)
Search Results
Results: 1 through 19 of 19 (0.044 secs)
You searched for: mediatype:(texts) -contributor:gutenberg AND (subject:"Bradley, William O'Connell, 1847-1914" OR creator:"Bradley, William O'Connell, 1847-1914" OR creator:William O'Connell Bradley)
[texts]Public documents - Bradley, William O'Connell, 1847-1914

Keywords: Bradley, William O'Connell, 1847-1914
Downloads: 119
[texts]William O'Connell Bradley (late a senator from kentucky) Memorial addresses delivered in the Senate of the United States. Proceedings in the Senate, June 24, 1916 - United States. 64th Congress, 1st session, 1915-1916. Senate. [from old catalog]

Keywords: Bradley, William O'Connell, 1847-1914. [from old catalog]
Downloads: 140
[texts]Stories and speeches of William O. Bradley; with biographical sketch by M. H. Thatcher - Bradley, William O'Connell, 1847-1914

Downloads: 475
[texts]Stories and speeches of William O. Bradley; with biographical sketch by M. H. Thatcher - Bradley, William O'Connell, 1847-1914

Downloads: 388
[texts]Stories and speeches of William O. Bradley; with biographical sketch by M. H. Thatcher - Bradley, William O'Connell, 1847-1914
Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.
Downloads: 142
[texts]Abraham Lincoln's contemporaries (Volume Lincoln's Contemporaries - A.A. Burton) - Lincoln Financial Foundation Collection
From the files of the Lincoln Financial Foundation Collection
Keywords: Burton, Allen A; Bradley, William O'Connell, 1847-1914; Lincoln, Abraham, 1809-1865
Downloads: 86
[texts]Supernova Remnants and the Interstellar Medium of M83: Imaging & Photometry with WFC3 on HST - Michael A. Dopita
We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphology and photometry in continuum-subtracted H$\alpha$, [\SII], H$\beta$, [\OIII] and [\OII] filters, we have identified 60 supernova remnant candidates, as well as a handful of young ejecta-dominated candidates. A catalog of these remnants, their sizes and, where possible their H$\alpha$ fluxes are given...
Downloads: 7
[texts]Large-scale shock-ionized and photo-ionized gas in M83: the impact of star formation - Sungryong Hong
We investigate the ionization structure of the nebular gas in M83 using the line diagnostic diagram, [O III](5007 \degA)/H{\beta} vs. [S II](6716 \deg A+6731 \deg A)/H{\alpha} with the newly available narrowband images from the Wide Field Camera 3 (WFC3) of the Hubble Space Telescope (HST). We produce the diagnostic diagram on a pixel-by-pixel (0.2" x 0.2") basis and compare it with several photo- and shock-ionization models...
Downloads: 5
[texts]Progressive star formation in the young galactic super star cluster NGC 3603 - Giacomo Beccari
Early release science observations of the cluster NGC3603 with the WFC3 on the refurbished HST allow us to study its recent star formation history. Our analysis focuses on stars with Halpha excess emission, a robust indicator of their pre-main sequence (PMS) accreting status. The comparison with theoretical PMS isochrones shows that 2/3 of the objects with Halpha excess emission have ages from 1 to 10 Myr, with a median value of 3 Myr, while a surprising 1/3 of them are older than 10 Myr...
Downloads: 9
[texts]Detection of brown dwarf-like objects in the core of NGC3603 - Loredana Spezzi
We use near-infrared data obtained with the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope to identify objects having the colors of brown dwarfs (BDs) in the field of the massive galactic cluster NGC 3603. These are identified through use of a combination of narrow and medium band filters spanning the J and H bands, and which are particularly sensitive to the presence of the 1.3-1.5{\mu}m H2O molecular band - unique to BDs...
Downloads: 8
[texts]Using H-alpha Morphology and Surface Brightness Fluctuations to Age-Date Star Clusters in M83 - Bradley C. Whitmore
We use new WFC3 observations of the nearby grand design spiral galaxy M83 to develop two independent methods for estimating the ages of young star clusters. The first method uses the physical extent and morphology of Halpha emission to estimate the ages of clusters younger than tau ~10 Myr. It is based on the simple premise that the gas in very young (tau < few Myr) clusters is largely coincident with the cluster stars, is in a small, ring-like structure surrounding the stars in slightly older c...
Downloads: 4
[texts]A WFC3 study of globular clusters in NGC 4150 - an early-type minor merger - Sugata Kaviraj
We combine near-ultraviolet (NUV; 2250 {\AA}) and optical (U, B, V, I) imaging from the Wide Field Camera 3 (WFC3), on board the Hubble Space Telescope (HST), to study the globular cluster (GC) population in NGC 4150, a sub-L* (M_B ~ -18.48 mag) early-type minor-merger remnant in the Coma I cloud. We use broadband NUV-optical photometry from the WFC3 to estimate individual ages, metallicities, masses and line-of-sight extinctions [E_(B-V)] for 63 bright (M_V 0.3 ZSun) clusters that have formed ...
Downloads: 11
[texts]The Resolved Stellar Population in 50 Regions of M83 from HST/WFC3 Early Release Science Observations - Hwihyun Kim
We present a multi-wavelength photometric study of ~15,000 resolved stars in the nearby spiral galaxy M83 (NGC5236, D=4.61Mpc) based on Hubble Space Telescope Wide Field Camera 3 observations using four filters: F336W, F438W, F555W, and F814W. We select 50 regions (an average size of 260 pc by 280 pc) in the spiral arm and inter-arm areas of M83, and determine the age distribution of the luminous stellar populations in each region...
Downloads: 6
[texts]Hubble Space Telescope Imaging of Lyman Alpha Emission at z=4.4 - Steven L. Finkelstein
We present the highest redshift detections of resolved Lyman alpha emission, using Hubble Space Telescope/ACS F658N narrowband-imaging data taken in parallel with the Wide Field Camera 3 Early Release Science program in the GOODS CDF-S. We detect Lyman alpha emission from three spectroscopically confirmed z = 4.4 Lyman alpha emitting galaxies (LAEs), more than doubling the sample of LAEs with resolved Lyman alpha emission...
Downloads: 12
[texts]Star formation in 30 Doradus - Guido De Marchi
Using observations obtained with the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope (HST), we have studied the properties of the stellar populations in the central regions of 30 Dor, in the Large Magellanic Cloud. The observations clearly reveal the presence of considerable differential extinction across the field. We characterise and quantify this effect using young massive main sequence stars to derive a statistical reddening correction for most objects in the field...
Downloads: 5
[texts]Triggered star-formation in the inner filament of Centaurus A - R. Mark Crockett
We present recent Hubble Space Telescope observations of the inner filament of Centaurus A, using the new Wide Field Camera 3 (WFC3) $F225W, F657N$ and $F814W$ filters. We find a young stellar population near the south-west tip of the filament. Combining the WFC3 dataset with archival Advanced Camera for Surveys (ACS) $F606W$ observations, we are able to constrain the ages of these stars to
Downloads: 2
[texts]The Hubble Space Telescope Wide Field Camera 3 Early Release Science data: Panchromatic Faint Object Counts for 0.2-2 microns wavelength - Rogier A. Windhorst
We describe the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) Early Release Science (ERS) observations in the Great Observatories Origins Deep Survey (GOODS) South field. The new WFC3 ERS data provide calibrated, drizzled mosaics in the UV filters F225W, F275W, and F336W, as well as in the near-IR filters F098M (Ys), F125W (J), and F160W (H) with 1-2 HST orbits per filter. Together with the existing HST Advanced Camera for Surveys (ACS) GOODS-South mosaics in the BViz filters, these pa...
Downloads: 38
[texts]The Luminosity, Mass, and Age Distributions of Compact Star Clusters in M83 Based on HST/WFC3 Observations - Rupali Chandar
The newly installed Wide Field Camera 3 (WFC3) on the Hubble Space Telescope has been used to obtain multi-band images of the nearby spiral galaxy M83. These new observations are the deepest and highest resolution images ever taken of a grand-design spiral, particularly in the near ultraviolet, and allow us to better differentiate compact star clusters from individual stars and to measure the luminosities of even faint clusters in the U band...
Downloads: 32
[texts]Anatomy of a post-starburst minor merger: a multi-wavelength WFC3 study of NGC 4150 - R. Mark Crockett
(Abridged) We present a spatially-resolved near-UV/optical study of NGC 4150, using the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. Previous studies of this early-type galaxy (ETG) indicate that it has a large reservoir of molecular gas, exhibits a kinematically decoupled core (likely indication of recent merging) and strong, central H_B absorption (indicative of young stars). The core of NGC 4150 shows ubiquitous near-UV emission and remarkable dusty substructure...
Downloads: 50
Advanced search

Group results by:

> Relevance

Related mediatypes


Terms of Use (31 Dec 2014)